AASHTO sizes #1 to #10 · tons and cubic yards
Crushed stone calculator
Enter length, width and depth to get crushed stone in cubic yards and US tons. The calculator opens with a published 3/4 inch crushed stone weight of 2,800 lb per yard (LandCare Stone); other ¾ inch products are 2,600 lb. Crushed stone is sold by size number, so the chart below gives every AASHTO size from #1 to #10.
How much crushed stone you need
Enter your dimensions to see cubic yards, tons and bags
The short answer
How much crushed stone do I need?
Multiply length × width in feet by depth in inches, then divide by 324 for cubic yards. A 10 × 10 ft patio base at 3 in needs 25 ft³, or 0.93 cubic yards, which is about 1.3 US tons at the LandCare Stone figure of 2,800 lb per cubic yard (1.4 tons per yard). At 2,600 lb, the same patio base is 1.2 tons, so ask for the weight of the exact product.
Size numbers
Crushed stone sizes: #1 to #10
Crushed stone is graded by AASHTO M43 size number. A lower number is a bigger stone: #1 is 3½ to 1½ in, #8 is ⅜ in to No. 8. A number with two or three digits is a blend of the single sizes in it; in the words of Maryland’s Department of the Environment, “#57 stone is a combination of #5 and #7 stone.”
| Size | Nominal size | In Pennsylvania | Named use |
|---|---|---|---|
| #1 | 3½ to 1½ in | PA #4 | — |
| #2 | 2½ to 1½ in | — | stabilized construction entrances, stone reservoirs (Maryland Department of the Environment) |
| #24 | 2½ to ¾ in | — | — |
| #3 | 2 to 1 in | PA 3A | — |
| #357 | 2 in to No. 4 | — | — |
| #4 | 1½ to ¾ in | — | — |
| #467 | 1½ in to No. 4 | — | — |
| #5 | 1 to ½ in | — | — |
| #56 | 1 in to ⅜ in | — | — |
| #57 | 1 in to No. 4 | PA 2B | stone reservoirs, around underdrains, under permeable paving (Maryland Department of the Environment) |
| #6 | ¾ to ⅜ in | — | — |
| #67 | ¾ in to No. 4 | — | — |
| #68 | ¾ in to No. 8 | — | — |
| #7 | ½ in to No. 4 | — | — |
| #78 | ½ in to No. 8 | — | — |
| #8 | ⅜ in to No. 8 | PA 1B | chip surfacing (Penn State Center for Dirt and Gravel Road Studies) |
| #89 | ⅜ in to No. 16 | — | — |
| #9 | No. 4 to No. 16 | — | — |
| #10 | No. 4 to 0 | — | structural fill, traction on ice; not a filter (Maryland Department of the Environment) |
“¾ inch stone” is not one of the sizes
The two nearest are #67 (¾ in to No. 4) and #57 (1 in to No. 4), and the #57 grading sets no limit at the ¾ inch sieve. A product sold as “¾ inch” could match either, so ask for the number. The #57 stone calculator has the full #57 grading.
Pennsylvania uses its own names
PA 2B is AASHTO #57, 3A is #3 and 1B is #8, but a Pennsylvania #4 is AASHTO #1 (3½ to 1½ in), not AASHTO #4 (1½ to ¾ in). A quote for “#4 stone” can mean either, depending on the yard.
Sizes from AASHTO M43 as reproduced in FDOT Section 901, with #57 checked against VDOT’s 2020 Table II-3. Sieve openings: No. 4 = 4.75 mm, No. 8 = 2.36 mm, No. 16 = 1.18 mm. Pennsylvania names from Penn State’s aggregate chart.
The calculation
How to calculate crushed stone
- Pick the size number.Ask the yard for the AASHTO size, such as #57 or #67, rather than “¾ inch”. The size chart above shows what each number covers.
- Measure the area.Length × width in feet. Split an L-shape into rectangles and add each as its own area above.
- Convert to cubic yards.Length × width × depth in inches ÷ 324. A 10 × 10 ft patio base at 3 inches is 0.93 yd³.
- Convert with that product’s weight.Multiply by its pounds per cubic yard and divide by 2,000. The ¾ inch weights published here run from 2,600 to 2,800 lb.
Rectangle · US measurements
Length × Width × Depth ÷ 324
Feet × feet × inches → cubic yards
Cubic yards × 2,800 ÷ 2,000
Cubic yards × lb/yd³ → US tons at the reference weight
Read the full calculation method ↗Worked examples
Crushed stone calculator examples
At 103.7 lb/ft³, before any allowance. Open one to load it into the calculator. Under pavers, the patio base should be at least 4 inches; see how thick a paver base should be.
| Project | Volume | Weight |
|---|---|---|
| 10 × 10 ft patio base at 3 in | 25 ft³ · 0.93 yd³ | 1.3 US tons |
| 30 × 4 ft path at 2 in | 20 ft³ · 0.74 yd³ | 1.04 US tons |
| 12 × 40 ft driveway layer at 4 in | 160 ft³ · 5.93 yd³ | 8.3 US tons |
Bulk quantities
How much does a ton or a cubic yard of crushed stone cover?
One US ton at 2,800 lb per cubic yard is 0.71 cubic yards (19.29 ft³).
| Depth | One US ton covers | Tons for 100 ft² |
|---|---|---|
| 2 in | 115.71 ft² | 0.86 tons |
| 3 in | 77.14 ft² | 1.3 tons |
| 4 in | 57.86 ft² | 1.73 tons |
Why the density matters
How much does a yard of crushed stone weigh?
One cubic yard of crushed stone weighs 2,600 to 2,800 lb (1.3 to 1.4 US tons) across the published figures below, and 2,800 lb (1.4 US tons) at the calculator’s preset.
| Product | Publisher | lb per yd³ | Tons per yd³ |
|---|---|---|---|
| 3/4 inch Crushed Stone | LandCare Stone | 2,800 | 1.4 |
| 3/4 inch Crushed Limestone | Birch Tree Bark & Stone | 2,600 | 1.3 |
| 3/4 inch crush minus | Lasalle Sand & Gravel | 2,600 | 1.3 |
Enter your supplier’s figure under Material & allowance. For gravel in general, see how much a yard of gravel weighs, which lists each supplier weight per yard in our ledger with its source and recorded date.
Published prices
How much does crushed stone cost?
Public price lists from 4 suppliers give a median of $71.99 per cubic yard ($33.00–$174.99, 3 lists) and $24.00–$49.50 per ton (2 lists), before delivery. At this page’s reference weight of 2,800 lb per yard, those per-ton prices work out to about $33.60–$69.30 per cubic yard.
| Supplier | Product | Price |
|---|---|---|
| R.J. Grondin & Sons Gorham, ME | 3/4 inch Crushed Stone | $24.00 per ton Loaded at the pit; delivery extra |
| R.J. Grondin & Sons Gorham, ME | 3/4 inch Crushed Stone | $33.00 per cubic yard Loaded at the pit; delivery extra |
| Main's Landscape Supply Southfield, MI | Crushed Limestone 6A, 3/4 inch clean | $71.99 per cubic yard Delivery extra |
| Bracht Bros Forest Lake, MN | Tan Limestone 3/4 inch Clean | $49.50 per ton Pickup; plus county tax |
| Texas Garden Materials Houston, TX | Limestone Gravel 3/4 inch, washed | $174.99 per cubic yard Pickup; delivery at checkout |
Per-ton and per-yard prices are not comparable until you convert with the product’s own weight per yard. Delivery fees, minimum orders and the other materials we track are on the gravel prices page.
Before you order
Frequently asked questions about crushed stone
How many tons of crushed stone are in a cubic yard?
It depends on the product. LandCare Stone publishes 2,800 lb (1.4 tons) for its 3/4 inch Crushed Stone; Birch Tree Bark & Stone publishes 2,600 lb (1.3 tons) for its 3/4 inch Crushed Limestone; Lasalle Sand & Gravel publishes 2,600 lb (1.3 tons) for its 3/4 inch crush minus. Use the figure your supplier bills by.
Is crushed stone the same as gravel?
Not in specification language. Maryland’s Department of the Environment defines stone as a manufactured product made by crushing larger material, with angular, rough faces that knit together, and gravel as naturally occurring particles rounded by moving water. Suppliers use both words loosely, so ask for the size number.
What is 2B stone?
It is Pennsylvania’s name for AASHTO #57. Pennsylvania also calls #3 “3A” and #8 “1B”, but its “#4” is AASHTO #1 (3½ to 1½ in), a much bigger stone than AASHTO #4 (1½ to ¾ in). Check which system a quote uses.
Can I use this for #57 stone or crusher run?
Yes, by changing the density, but each has its own page with its own published weights: the #57 stone calculator and the crusher run calculator, which also covers compacting a base.
References
- 3/4 inch Crushed Stone: 2,800 lb/yd³, LandCare Stone. Recorded September 23, 2026
- 3/4 inch Crushed Limestone: 2,600 lb/yd³, Birch Tree Bark & Stone. Recorded September 23, 2026
- 3/4 inch crush minus: 2,600 lb/yd³, Lasalle Sand & Gravel. Recorded September 16, 2026
- Section 901, Table 1: Standard Sizes of Coarse Aggregate, Florida Department of Transportation (2010 workbook). Checked September 24, 2026
- Road and Bridge Specifications 2020, Virginia Department of Transportation. Checked September 24, 2026
- Guide to Common Construction Materials and Components, Maryland Department of the Environment. Checked September 24, 2026
- Aggregates 101 webinar (January 21, 2021), Penn State Center for Dirt and Gravel Road Studies. Checked September 24, 2026
About these calculations
Written with AI assistance from the sources listed on this page. Each figure links to its source; recorded dates are shown with the figures or in the gravel weight and price ledgers, and the arithmetic is covered by automated tests. How this page was made · Report an error